📄 htmloutputdev.h
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//========================================================================//// HtmlOutputDev.h//// Copyright 1997 Derek B. Noonburg//// Changed 1999 by G.Ovtcharov//========================================================================#ifndef HTMLOUTPUTDEV_H#define HTMLOUTPUTDEV_H#ifdef __GNUC__#pragma interface#endif#include <stdio.h>#include "gtypes.h"#include "GList.h"#include "GfxFont.h"#include "OutputDev.h"#include "HtmlLinks.h"#include "HtmlFonts.h"#include "Link.h"#include "Catalog.h"#include "UnicodeMap.h"#ifdef WIN32# define SLASH '\\'#else# define SLASH '/'#endif#define xoutRound(x) ((int)(x + 0.5))#define xoutRoundLower(x) ((int)(x - 0.5))#define DOCTYPE "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"#define DOCTYPE_FRAMES "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Frameset//EN\"\n\"http://www.w3.org/TR/html4/frameset.dtd\">"class GfxState;class GString;//------------------------------------------------------------------------// HtmlString//------------------------------------------------------------------------class HtmlString {public: // Constructor. HtmlString(GfxState *state, double fontSize, double charspace, HtmlFontAccu* fonts); // Destructor. ~HtmlString(); // Add a character to the string. void addChar(GfxState *state, double x, double y, double dx, double dy, Unicode u); HtmlLink* getLink() { return link; } void endString(); // postprocessingprivate:// aender die text variable HtmlLink *link; double xMin, xMax; // bounding box x coordinates double yMin, yMax; // bounding box y coordinates int col; // starting column Unicode *text; // the text double *xRight; // right-hand x coord of each char HtmlString *yxNext; // next string in y-major order HtmlString *xyNext; // next string in x-major order int fontpos; GString* htext; GString* htext2; int strSize; int len; // length of text and xRight int size; // size of text and xRight arrays UnicodeTextDirection dir; // direction (left to right/right to left) friend class HtmlPage;};//------------------------------------------------------------------------// HtmlPage//------------------------------------------------------------------------class HtmlPage {public: // Constructor. HtmlPage(GBool rawOrder, char *imgExtVal); // Destructor. ~HtmlPage(); // Begin a new string. void beginString(GfxState *state, GString *s); // Add a character to the current string. void addChar(GfxState *state, double x, double y, double dx, double dy, double ox, double oy, Unicode *u, int uLen); //Guchar c); void updateFont(GfxState *state); void updateCharSpace(GfxState *state); // End the current string, sorting it into the list of strings. void endString(); // Coalesce strings that look like parts of the same line. void coalesce(); // Find a string. If <top> is true, starts looking at top of page; // otherwise starts looking at <xMin>,<yMin>. If <bottom> is true, // stops looking at bottom of page; otherwise stops looking at // <xMax>,<yMax>. If found, sets the text bounding rectange and // returns true; otherwise returns false. // new functions void AddLink(const HtmlLink& x){ links->AddLink(x); } void dump(FILE *f, int pageNum); // Clear the page. void clear(); void conv();private: HtmlFont* getFont(HtmlString *hStr) { return fonts->Get(hStr->fontpos); } double fontSize; // current font size GBool rawOrder; // keep strings in content stream order double charspace; HtmlString *curStr; // currently active string HtmlString *yxStrings; // strings in y-major order HtmlString *xyStrings; // strings in x-major order HtmlString *yxCur1, *yxCur2; // cursors for yxStrings list void setDocName(char* fname); void dumpAsXML(FILE* f,int page); void dumpComplex(FILE* f, int page); // marks the position of the fonts that belong to current page (for noframes) int fontsPageMarker; HtmlFontAccu *fonts; HtmlLinks *links; GString *DocName; GString *imgExt; int pageWidth; int pageHeight; static int pgNum; int firstPage; // used to begin the numeration of pages friend class HtmlOutputDev;};//------------------------------------------------------------------------// HtmlMetaVar//------------------------------------------------------------------------class HtmlMetaVar {public: HtmlMetaVar(char *_name, char *_content); ~HtmlMetaVar(); GString* toString(); private: GString *name; GString *content;};//------------------------------------------------------------------------// HtmlOutputDev//------------------------------------------------------------------------class HtmlOutputDev: public OutputDev {public: // Open a text output file. If <fileName> is NULL, no file is written // (this is useful, e.g., for searching text). If <useASCII7> is true, // text is converted to 7-bit ASCII; otherwise, text is converted to // 8-bit ISO Latin-1. <useASCII7> should also be set for Japanese // (EUC-JP) text. If <rawOrder> is true, the text is kept in content // stream order. HtmlOutputDev(char *fileName, char *title, char *author, char *keywords, char *subject, char *date, char *extension, GBool rawOrder, int firstPage = 1, GBool outline = 0); // Destructor. virtual ~HtmlOutputDev(); // Check if file was successfully created. virtual GBool isOk() { return ok; } //---- get info about output device // Does this device use upside-down coordinates? // (Upside-down means (0,0) is the top left corner of the page.) virtual GBool upsideDown() { return gTrue; } // Does this device use drawChar() or drawString()? virtual GBool useDrawChar() { return gTrue; } // Does this device use beginType3Char/endType3Char? Otherwise, // text in Type 3 fonts will be drawn with drawChar/drawString. virtual GBool interpretType3Chars() { return gFalse; } // Does this device need non-text content? virtual GBool needNonText() { return gFalse; } //----- initialization and control // Start a page. virtual void startPage(int pageNum, GfxState *state); // End a page. virtual void endPage(); //----- update text state virtual void updateFont(GfxState *state); virtual void updateCharSpace(GfxState *state); //----- text drawing virtual void beginString(GfxState *state, GString *s); virtual void endString(GfxState *state); virtual void drawChar(GfxState *state, double x, double y, double dx, double dy, double originX, double originY, CharCode code,int nBytes, Unicode *u, int uLen); virtual void drawImageMask(GfxState *state, Object *ref, Stream *str, int width, int height, GBool invert, GBool inlineImg); virtual void drawImage(GfxState *state, Object *ref, Stream *str, int width, int height, GfxImageColorMap *colorMap, int *maskColors, GBool inlineImg); //new feature virtual int DevType() {return 1234;} virtual void drawLink(Link *link,Catalog *cat); int getPageWidth() { return maxPageWidth; } int getPageHeight() { return maxPageHeight; } GBool dumpDocOutline(Catalog* catalog);private: // convert encoding into a HTML standard, or encoding->getCString if not // recognized static char* mapEncodingToHtml(GString* encoding); GString* getLinkDest(Link *link,Catalog *catalog); void dumpMetaVars(FILE *); void doFrame(int firstPage); GBool newOutlineLevel(FILE *output, Object *node, Catalog* catalog, int level = 1); FILE *fContentsFrame; FILE *page; // html file //FILE *tin; // image log file //GBool write; GBool needClose; // need to close the file? HtmlPage *pages; // text for the current page GBool rawOrder; // keep text in content stream order GBool doOutline; // output document outline GBool ok; // set up ok? GBool dumpJPEG; int pageNum; int maxPageWidth; int maxPageHeight; static int imgNum; GString *Docname; GString *docTitle; GList *glMetaVars; friend class HtmlPage;};#endif⌨️ 快捷键说明
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